Contacts of the helix formed by residues 689 - 693 (chain B) in PDB entry 3PT6
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with CYS 689 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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4B ZN 2.3 36.8 - - - -
666B GLU* 3.4 42.5 + - + +
667B CYS* 3.9 1.8 - - - -
670B CYS* 3.7 1.3 - - - -
672B ALA* 4.6 0.2 - - - -
673B CYS* 4.0 5.6 - - - -
676B MET* 5.6 1.2 - - - -
688B ALA* 1.3 71.1 - - - +
690B LEU* 1.3 56.2 + - - +
691B LYS* 3.5 22.4 - - - -
692B ARG* 2.7 42.3 + - + +
693B ARG* 2.8 12.5 + - - -
13D C 5.2 0.4 + - - -
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Residues in contact with LEU 690 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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661B VAL* 5.3 0.3 - - - +
670B CYS* 3.3 22.8 - - - -
672B ALA* 4.8 2.2 - - + +
688B ALA 3.5 1.0 + - - -
689B CYS* 1.3 71.4 - - - +
691B LYS* 1.3 57.5 + - - +
692B ARG 3.4 2.6 + - - -
693B ARG* 3.0 34.4 + - - +
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Residues in contact with LYS 691 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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661B VAL* 3.0 12.9 - - - +
664B GLN* 2.8 36.1 - - + +
665B PRO 5.3 4.3 - - - +
667B CYS* 5.5 5.8 - - + +
670B CYS* 4.5 1.0 - - - -
689B CYS* 3.0 16.5 - - - -
690B LEU* 1.3 77.2 - - - +
692B ARG* 1.3 60.8 + - + +
693B ARG 3.6 1.3 - - - -
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Residues in contact with ARG 692 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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655B ARG* 2.6 61.1 + - - +
661B VAL* 3.5 8.1 - - - -
662B CYS 2.6 31.7 + - - -
663B GLN 5.0 1.4 + - - -
664B GLN 2.7 30.5 + - - +
665B PRO* 4.3 2.6 - - - +
666B GLU* 4.1 22.6 + - - +
688B ALA* 4.5 5.5 - - + +
689B CYS* 2.7 35.8 + - + +
691B LYS* 1.3 81.2 - - - +
693B ARG* 1.3 59.5 + - - +
694B CYS 3.4 0.9 + - - -
12D T 4.4 2.6 + - - -
13D C 2.9 15.0 + - - -
14D C 5.4 2.3 + - - -
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Residues in contact with ARG 693 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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661B VAL* 3.6 9.6 - - + +
672B ALA* 5.0 3.4 - - - +
687B GLN* 4.3 18.9 + - - +
688B ALA* 2.9 28.4 + - - -
689B CYS 2.8 28.4 + - - -
690B LEU* 3.0 26.5 + - + +
691B LYS 3.6 2.2 - - - -
692B ARG* 1.3 77.1 - - - +
694B CYS* 1.3 60.5 + - - +
695B PRO* 2.9 18.2 - - - +
14D C 4.2 18.6 + - - -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il